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SignalHarness EVM Transaction Receipt Match
x402
SignalHarness EVM Transaction Receipt Match is a paid API for AI agents from signalharness.ai, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-13).
Matches and validates an EVM transaction receipt against caller-supplied criteria, returning a structured match result with evidence and warnings.
Price / call$0.005
Success—
StatusUnknown
How this service works
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Output
Returns a JSON object containing: a boolean replay flag, a result object with the match status string, any warnings, service ID, and evidence scope, plus a full service receipt with payment details, network (e.g. eip155:8453 for Base), amounts, timing, a SHA-256 result hash, and execution metadata.
Example use cases
Crypto payment confirmation for e-commerce
“I just received a payment on Base network — can you check if this transaction receipt matches the order details I have? Here's the receipt data and what I was expecting; tell me if it's a match and flag any warnings.”
DeFi settlement audit
“We need to audit whether our DeFi protocol's settlement transaction receipts match the intended parameters — can you run this receipt data through a match check and give me the result with any discrepancies?”
Agent-to-agent payment verification
“My agent just sent a USDC payment on an EVM chain and I need to confirm the receipt matches the agreed terms — can you validate this receipt against my expected transaction criteria and tell me if it succeeded?”
Technical details
Endpoint
POSThttps://signalharness.ai/api/agent/services/evm_transaction_receipt_match/invokeWhen to prefer
Choose this endpoint when you need a structured, auditable match result for an EVM transaction receipt — particularly on Base network — with evidence scoping and SHA-256 result hashing for downstream verification. Prefer it over raw on-chain lookups when you need a standardized match/no-match verdict with warnings and a verifiable receipt artifact in a single paid API call.
Side effects
- Malformed or invalid transaction receipt match request string returns validation error
- Receipt data that doesn't parse as valid EVM transaction data may produce warnings rather than a hard error
- Replay attacks detected and flagged via the replay boolean field
- Network or service downtime may cause execution failures with status other than 'succeeded'
- Oversized input exceeding 65536 characters will be rejected
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| transaction_receipt_match_request | string |
Output
Schema · Response
{
"type": "json",
"example": {
"replay": false,
"result": {
"warnings": [
"A matching pair is not proof that either record came from a chain."
],
"service_id": "evm_transaction_receipt_match",
"evidence_scope": "caller_supplied_data",
"transaction_receipt_match": "{\"checks\":{\"block_hash\":true,\"block_number\":true,\"transaction_hash\":true},\"matches\":true}"
},
"status": "succeeded",
"receipt": {
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"usage": [],
"status": "succeeded",
"network": "eip155:8453",
"artifacts": [],
"endedAtMs": 0,
"latencyMs": 0,
"paymentId": "example-payment",
"receiptId": "example-receipt",
"requestId": "example-request",
"serviceId": "evm_transaction_receipt_match",
"executionId": "example-execution",
"startedAtMs": 0,
"amountAtomic": "5000",
"resultSha256": "a9bc3d9e46f8aa4640effde9f67bde5ef75dd01b6c7bd381e83b739ea75cd49a",
"serviceVersion": "1.0.0",
"settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
},
"artifacts": [],
"requestId": "example-request",
"executionId": "example-execution"
}
}Tags
x402
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